It too begins with the sender’s address, the date, the receiver’s name and address, and then the opening salutation. The difference between full-block and semi block is easy:In full-block format, nothing is indented.In semi-block format, the sender’s address, date and closing salutation are indented.In semi-block format, it is also permissible to indent the paragraphs, but it is not necessary to do so.If you have questions about this format, please email me.Sincerely, Taufik Prasetyo